Phase equilibria and PVT data for the methane-methanol system to 300 MPa and 240/sup 0/C

Journal Article · Thu Oct 29 00:00:00 EST 1981 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150622a019· OSTI ID:6087567

Francesconi, A Z; Lentz, H; Franck, E U

The apparatus and experimental procedure are described, which permit the determination of phase equilibria and PVT data of fluid binary systems to high temperatures and pressures. Visual observation through a sapphire window is combined with pT measurements at constant volumes. The boundary surface of the two-phase region of the methane-methanol system is determined by pT curves of nine compositions (isopleths) from 8 to 90 mol % CH/sub 3/OH. The critical curve is of the interrupted type and extends from the critical point of methanol (239/sup 0/C, 8.1 MPa) to 33.0/sup 0/C and 300 MPa with a critical volume of 31.2 cm/sup 3/ mol/sup -1/. At 150/sup 0/C molar volume data for the one-phase region to 300 MPa are given. For pressures to 30 MPa the critical curve could be calculated by a semiempirical method. New experimentally determined data for the molar volumes of methane are presented from 50 to 450/sup 0/C and from 30 to 300 MPa.

• Research Organization: Universitat Karlsruhe, Germany
• OSTI ID: 6087567
• Journal Information: J. Phys. Chem.; (United States), Vol. 85:22
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
10 SYNTHETIC FUELS
METHANE
PHASE STUDIES
METHANOL
EXPERIMENTAL DATA
HIGH PRESSURE
HIGH TEMPERATURE
MEDIUM TEMPERATURE
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
VERY HIGH PRESSURE
VOLUME
ALCOHOLS
ALKANES
DATA
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
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